Abstract

For controlling ignition of HCCI engine fueled by biomass gas, the effect of ozone addition was investigated. In previous experiment, it was shown that ignition timing is advanced by ozone addition. In this paper, the chemical reactions and the mechanism of ignition advance by ozone addition were investigated by calculation with erementaly reactions. As a result, the heat releace was divided into two stages under the influence of O radical, produced by thermal decomposition of ozone. Moreover, Hydrogen peroxide was produced after the first combustion, and the second ignition was advanced by OH radical produced by Hydrogen peroxide.

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